3Com Switch 7750 Series
Command Reference Guide – QoS Chapter 1 QoS Commands
1-15
z cos precedence: cos precedence value ranges from 0 to 7, the packet whose
precedence value is 0 is put into queue 2, the packet whose precedence value is 1
is put into queue 0, the packet whose precedence value is 2 is put into queue 1. As
for the left precedence values, the queue number is equal to the precedence value.
For example, the packet whose precedence value is 3 is put into queue 3.
z local-precedence: local-precedence value ranges from 0 to 7. The packet
whose precedence value is 0 is put into queue 0, and so on.
You can choose the corresponding packet precedence as the basis for putting a packet
into an output queue on a port as required.
Example
# Specify the switch to put a packet into an output queue according to the DSCP
precedence of the packet.
<3Com> system-view
[3Com] priority-trust dscp
1.1.17 qos Syntax
qos
View
Ethernet port view
Parameter
None
Description
Use the qos command to enter QoS view and perform the corresponding QoS
configuration.
Note:
Different LPUs of the Switch 7750 support different QoS functions. You can use “?” to
query the supported QoS configurations after entering different QoS views.